ncat JP1925 Calcite, Sphalerite, Dolomite, Becke-Oese quarry, Menden, Iserlohn, Sauerland, North Rhine-Westphalia, Germany October 11, 2019 Steve Europe Germany
Africa South Africa 30061 Groutite, Calcite, Wessels Mine, Hotazel, Kalahari manganese field, Northern Cape, South Africa April 21, 2020
